Chair



FIG. 1 is a front perspective view of the design;

FIG. 2 is a rear perspective view of the design;

FIG. 3 is a left side elevation view thereof (with the right side being identical); and,

FIG. 4 is a rear elevation view thereof.

The portions of the chair shown in broken lines are provided for illustration purposes only and form no part of the claimed design. 

The ornamental design for a chair, as shown and described. 